Office



A. i; FROMAGER 6L J. F. SIX.

SWITCH BLOCK AND CASING.

APPLICATION FILEDV 1M/14. 1915.

vPatented Aug. 1, 1916.

2 SHEETS-SHEET l 57? JESEPH Eau/'MN5 Szx Inverno" Allomeys me Nonms unsco raam-uma. wuumamu. n c.

A. I. FROMAGER & I. F. SIX.

SWITCH BLOCK AND CASING.

APPLICATION FILED MAY I4. I9I5.

(ze 2A LfRT S/BOJPE .Paw/agri? Inventors Witness:

JOSEPH 71E/wauw 51x um Namux vergas no., unam-uma. usmNcmN. v. c.

TED STATES PATENT FFCE.

ALBERT ISIDORE FRGMAGER AND JSESJ FERDINAND (S F MONTREAL, QUEBEC,CANADA.

SWITCH-Bl Gli 1 ,1931,253 Speeneaticn of 'o @Hicham t may concern Be itknown that we, jtnnnnr Isinonn Fuo- Mnenn, a subject oi the King oi?Great Britain, residing at No. 8 Laval avenue, Montreal, Province oiQuebec, Canada, and Josnrn FERDINAND SIX, a subject oi the King of GreatBritain, residing at No. Joliette street, Montreal, Province of Quebec,Canada, have invented certain new and useful improvements Switch-Pincheand Casings; and we do hereby declare that the following is a full,clear, and exact description oil the invention, such as will enableothers skilled in the art to which it appertains to make and use thesaine.

The invention to be hereinafter described relates to switch blocks andcasings.

In order to more clearly disclose the ccnstruction, operation, and useof the invention, reference should be had to the accompanying drawingsforming i irt of the present application.

Throughout the several figures of the drawings like reference charactersdesignate the saine parts.

In the drawings: Figure 1 is a tol plan View of the block with thecasing removed, partly broken away; Fig. 2 is a side view of the sainepartly in section; Fig. 3 is a .fragmentary underneath view ci the blockwith the casing removed; lFig. l is a section on line Ll-i of Fig. Qlooking in the direction oit the arrows; Fig. 5 is a top plan view ofthe casing and block; and Fig. G is aseotion on line 6 6 of Fig. 5looking in the direction of the arrow. y

The main objects ci the invention areto provide a compact and eillcientswitch block ttor electric circuits and a casing ilor the saine whichcooperate so as to eliectually prevent stealing et the electric currentby shunting it from the main line around the meter to the house circuit,and which will permit ready access to the switch block for the insertionoi new fuse plugs.

The block 1 of approximately rectangular' shape, of porcelain or othersuitable insulating material, is provided along each side with a deepgroove 2. A copper sleeve 3 is mounted in cach groove 2, near the upperend thereof, and tightly threaded into thV outer ring la olf a copperstrip il. A brass .contact screw 5 is passed through the inner end ol'strap l and provided with the usual nut which is held in tightengagement with ygroove 2.

Ain the usual manner.

AND C. SING.

the strip so as to establish a close connection between the saine andthe screw 5. The head of screw 5 is ilat and is centrally located in thebottoni ci a fuse socket jtermed in the iace of the block, as is usual.

fr rod 7 oic copper, or other suitable niaterlal, having a' taperedinner end, is slidably mounted through each sleeve 3 and the outer endsof these rods are bent inw( rdly at right angles and secured to a commonbeam S of non-conductive material the upper ends ofthe rods and thesecuring nuts therefor being covered by a casing or shell 9 of suitableinsulating material. T he rods 'l' are made a close fit over the sleeves8 so as to be in close frictional contact with the interiors thereof.

A copper tube 10 ci the same interior diameter as the sleeves 3, and inalinemei'it tlierewith, is secured in the lower end of each A bindingscrew 11 is threaded through block 1 into each tube 10 and engages oneof the wires 12 of the main circuit so as to hold kthe saine in closeengagement with the tube. The tubes are so spaced, relatively to thesleeves 3, that, when the rods 7 are forced inwardly 'their greatestdistance the inner ends snugly into the inner ends of the tubes 10 andlthus establish electrical connection between lthe main line wires andthe copper strips Li.

ln the upper face of block 1, at the central portion thereof, there aretwo parallel grooves 13 extending from the centers of the Jruse plugvsockets to the bottom or end of the block.` ln thc upper end oi eachgroove 18 there-is a short copper sleeve 14rthe upper end of which isthreaded irto a thread band 15 tlu'ough which is threaded the usualthread collar of the fuse plug socket, the band also being set in theblock rlhe switch plug 17 is threaded into the collar 16 until its lowercenter Contact engages the head of screw 5, in the usualmanner. .frblock1S of brass, or other suitable material, is threaded on the outer end ofeach sleeve 1l and secured on a recess in the block by meansV cfa shortanchor screw threaded into the under face thereof from the back oi theblock.

il. tube 19 is secured in the outer end of each groove 13, by means oi ablock 20 th readed on the inner end thereof similar to block 18. Arectangular copper plate 21 is secured on the outer end ol each tube 19and is electrically7 connected to one wire 22 of the house circuit.Close fitting rods 23 similar to rods 7 are slidably mounted in tubes 19and have their outer ends connected by a beam 2l similar' to beam S. Bvlorcing` beam S inwardly so as to bring rods T into contact with sleevesl0, and forcing beam 2l inwardly so as to bring rods 19 into contactwith sleeves ll, the main and the house circuits are completed in theusual manner.

The block l is inclosed in a steel casing 25 from which it is suit-ablyinsulated. An integral rib 2G is provided along` each side of thecasing; near the top thereof. These ribs form; with the top, U groovesin which are slidablv mounted steel panels 27 and Q8. The upper panel 2Tis secured to the beam S and is provided with a grip knob 29 operativein short slots 30 in the top or" the casing adjacent an opening 3l abovethe fuse plugs 1T, which is provided to permit renewal of the fuses whenthe same have been burned out. The knob 29 is so located on plate 2Tthat both ot' the slots 30 will be completel)v closed before the rods 7enter sleeves l0. This eliminates anv danger' of lire from sparking.Plate Q8 is secured to beam 2l so that. when this plate is forcedinwardly by means of knob 32 operated in a slot 33 through the top oithe casing, the house circuit is closed.

A partition 34; is provided across the casing, at the outer ends ofsleeves lst, and completely closes the upper part of the same. B v thismeans the connections of the line and house wires are secured againstbeing tampered with, while access to the fuse plugs is permitted. Thisefectually prevents the current being carried from the line wire aroundthe meter, as it is impossible to connect to the line wire without beingdetached. The line wires and the house eircuit wires are protected,where they pass through the casing Q5, by suitable tubes It is thoughtthat the construction, operation, and use of the invention will be clearfrom the preceding detailed description.

Changes may be made in the construction, arrangement, and disposition'of the several parts of the invention, within the limits of the claims,without in any way departing from the field and scope 0f the same, andit is meant to include all such within this application wherein only apreferred form has been disclosed.

Having thus fully described our invention; what we claim as new anddesire to secure b v Letters latent is:

In a device o't the character described; a closed casing provided withan opening through its top and slots communicating therewith; near oneend, and a slot near the other end, and a transverse partition at itsapproximate center; a block ot insulating material mounted therein andinsulated therefrom said block being provided with grooves and fuse plugsockets in its upper race and grooves in its sides; threaded collarssecured in the upper ends of the said plug sockets; sleeves secured inthe inner ends of the grooj'es in the upper face of the said block andelectricallv connected to the said threaded collar; tubes secured in theouter end of the said grooves in alinement with the said sleeves andadapted to be connected to the opposite sides of an electric circuit:conducting rods slidablv operative therein to make contact with thesleeves in the inner ends ot' the grooves: a beam ot insulating materialconnecting` the said rods at their outer ends; a slidablv operativeplate secured thereto and adapted to be operated from without thecasing: a tube mounted in one end of each of the said side grooves ofthe block and adapted to be connected to one side of an electriccircuit; sleeves mounted near the other end of the said grooves inalinement with the said tubes; copper strips connected to the saidsleeves at their outer ends; contact screws secured through the innerends thereotl and having their heads centrally located in the bottoms ofthe said fuse plug sockets; conducting rods slidably operative throughsaid sleeves to make contact with said tubes; a beam of insulatingmaterial secured to the outer ends ot' said rods; and a plate slidablyoperative within the casing and secured to the said beam; the said platebeing adapted to be operated from without the said casing.

Tn witness whereof we have hereunto set our hands in the presence ot twowitnesses.

ALBERT SDORE FROMGER. JOSEPH FERDINAND SIX.

\Vi.tnesses A. Bas'rmN, T. MYNARD.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

` Washington, D. C.

